// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// @dart=2.9

/*@testedFeatures=inference*/
library test;

int getInt() => 0;
num getNum() => 0;
double getDouble() => 0.0;

class Test1 {
  int prop;

  static void test(Test1 t) {
    var /*@type=int**/ v1 = t. /*@target=Test1.prop*/ prop = getInt();
    var /*@type=num**/ v2 = t. /*@target=Test1.prop*/ prop = getNum();
    var /*@type=int**/ v4 = /*@type=Test1**/ /*@target=Test1.prop*/ t
            . /*@target=Test1.prop*/ prop
         ??= getInt();
    var /*@type=num**/ v5 = /*@type=Test1**/ /*@target=Test1.prop*/ t
            . /*@target=Test1.prop*/ prop
         ??= getNum();
    var /*@type=int**/ v7 = /*@type=Test1**/ t
            . /*@target=Test1.prop*/ /*@target=Test1.prop*/ prop
        /*@target=num.+*/ += getInt();
    var /*@type=num**/ v8 = /*@type=Test1**/ t
            . /*@target=Test1.prop*/ /*@target=Test1.prop*/ prop
        /*@target=num.+*/ += getNum();
    var /*@type=int**/ v10 = /*@target=num.+*/ ++ /*@type=Test1**/ t
        . /*@target=Test1.prop*/ /*@target=Test1.prop*/ prop;
    var /*@type=int**/ v11 =
        /*@type=Test1**/ t
            . /*@type=int**/ /*@target=Test1.prop*/ /*@target=Test1.prop*/
            /*@type=int**/ prop /*@target=num.+*/ ++;
  }
}

class Test2 {
  num prop;

  static void test(Test2 t) {
    var /*@type=int**/ v1 = t. /*@target=Test2.prop*/ prop = getInt();
    var /*@type=num**/ v2 = t. /*@target=Test2.prop*/ prop = getNum();
    var /*@type=double**/ v3 = t. /*@target=Test2.prop*/ prop = getDouble();
    var /*@type=num**/ v4 = /*@type=Test2**/ /*@target=Test2.prop*/ t
            . /*@target=Test2.prop*/ prop
         ??= getInt();
    var /*@type=num**/ v5 = /*@type=Test2**/ /*@target=Test2.prop*/ t
            . /*@target=Test2.prop*/ prop
         ??= getNum();
    var /*@type=num**/ v6 = /*@type=Test2**/ /*@target=Test2.prop*/ t
            . /*@target=Test2.prop*/ prop
         ??= getDouble();
    var /*@type=num**/ v7 = /*@type=Test2**/ t
            . /*@target=Test2.prop*/ /*@target=Test2.prop*/ prop
        /*@target=num.+*/ += getInt();
    var /*@type=num**/ v8 = /*@type=Test2**/ t
            . /*@target=Test2.prop*/ /*@target=Test2.prop*/ prop
        /*@target=num.+*/ += getNum();
    var /*@type=num**/ v9 = /*@type=Test2**/ t
            . /*@target=Test2.prop*/ /*@target=Test2.prop*/ prop
        /*@target=num.+*/ += getDouble();
    var /*@type=num**/ v10 = /*@target=num.+*/ ++ /*@type=Test2**/ t
        . /*@target=Test2.prop*/ /*@target=Test2.prop*/ prop;
    var /*@type=num**/ v11 =
        /*@type=Test2**/ t
            . /*@type=num**/ /*@target=Test2.prop*/ /*@target=Test2.prop*/
            /*@type=num**/ prop /*@target=num.+*/ ++;
  }
}

class Test3 {
  double prop;

  static void test3(Test3 t) {
    var /*@type=num**/ v2 = t. /*@target=Test3.prop*/ prop = getNum();
    var /*@type=double**/ v3 = t. /*@target=Test3.prop*/ prop = getDouble();
    var /*@type=num**/ v5 = /*@type=Test3**/ /*@target=Test3.prop*/ t
            . /*@target=Test3.prop*/ prop
         ??= getNum();
    var /*@type=double**/ v6 = /*@type=Test3**/ /*@target=Test3.prop*/ t
            . /*@target=Test3.prop*/ prop
         ??= getDouble();
    var /*@type=double**/ v7 = /*@type=Test3**/ t
            . /*@target=Test3.prop*/ /*@target=Test3.prop*/ prop
        /*@target=double.+*/ += getInt();
    var /*@type=double**/ v8 = /*@type=Test3**/ t
            . /*@target=Test3.prop*/ /*@target=Test3.prop*/ prop
        /*@target=double.+*/ += getNum();
    var /*@type=double**/ v9 = /*@type=Test3**/ t
            . /*@target=Test3.prop*/ /*@target=Test3.prop*/ prop
        /*@target=double.+*/ += getDouble();
    var /*@type=double**/ v10 = /*@target=double.+*/ ++ /*@type=Test3**/ t
        . /*@target=Test3.prop*/ /*@target=Test3.prop*/ prop;
    var /*@type=double**/ v11 =
        /*@type=Test3**/ t
            . /*@type=double**/ /*@target=Test3.prop*/ /*@target=Test3.prop*/
            /*@type=double**/ prop /*@target=double.+*/ ++;
  }
}

main() {}
